Specifically, RunningWorld.com took data from 107.9M runners over 70,000 events over 209 countries over 32 years and found the "average" finish time was about 4

Specifically, RunningWorld.com took data from 107.9M runners over 70,000 events over 209 countries over 32 years and found the "average" finish time was about 4:32hrs. The men's world record is ~2 hours. https://www.runnersworld.com/uk/training/marathon/a27787958/average-marathon-finish-time/ https://www.runnersworld.com/uk/training/marathon/a27787958/... (That link has a video of people on a giant treadmill, moving at Kipchogi's world record pace, trying to keep up).